- Šárka Voráčová
Arc length of one arch is , where is radius of the rolling circle. Units of measurements are the same as axis units.
For different values of c you get a various type of cycloid. <ul> <li>Curtate cycloid: Here the point tracing out the curve is inside the circle, which rolls on a line.<\li> <li>Prolate cycloid: Here the point tracing out the curve is outside the circle, which rolls on a line<\li>. </ul>